For over 21 years ATI has been providing clients with the best communications applications supported by the highest level of professional services in the industry. Today ATI provides an innovative approach to systems integration utilizing a total systems approach. ATI specializes in IP Telephony and CTI applications specific to PBX, Voicemail, IVR and Contact Center applications.  ATI has over 2000 systems installed nationwide and is headquartered in Emeryville, California.